Document Detail

Occupational rhinitis and bronchial asthma due to artichoke (Cynara scolymus).
MedLine Citation:
PMID:  12877457     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The artichoke is a perennial horticultural plant that belongs to the Compositae family. OBJECTIVE: To present case studies of 2 vegetable warehouse workers who developed occupational rhinitis and bronchial asthma by sensitization to artichoke. METHODS: Skin prick tests with common inhalants and foods were performed. Specific IgE to artichoke, Parietaria judaica pollen, and Olea europaea pollen extracts was measured by a specific IgE enzyme immunosorbent assay kit. Molecular mass of the allergens was studied by the sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) immunoblotting technique. Patients underwent a nasal challenge test, and one patient provided peak expiratory flow rate (PEFR) measurements in her workplace. RESULTS: In both patients, results of skin prick tests to artichoke were positive. Levels of specific IgE for artichoke were 0.68 kU/L in patient 1 and 2.14 kU/L in patient 2. The protein composition of the artichoke extract, studied by SDS-PAGE, showed that most bands ranged from 30 to 14 kDa. The IgE-binding bands with the serum samples of patient 1 showed apparent molecular masses of 56, 48, 38, 31, 27, 25, 16, and 15 kDa; however, the serum samples of patient 2 showed IgE bands of 21 and 19 kDa. Western blotting of artichoke extract showed a complete inhibition of IgE-binding bands when serum samples were preincubated with P. judaica pollen extract. Nasal challenge with artichoke extract triggered a peak nasal inspiratory flow decrease of 81% and 85% in patient 1 and patient 2, respectively. Finally, patient 1 recorded a PEFR decrease of up to 36% after exposure to artichoke in her workplace. CONCLUSIONS: SDS-PAGE immunoblotting inhibition performed for the artichoke extract showed a total disappearance of the specific IgE binding bands when serum samples were previously incubated with P. judaica pollen extract, thus establishing the existence of a serologic cross-reactivity between artichoke and P. judaica pollen.
Juan-Carlos Miralles; Javier García-Sells; Borja Bartolomé; José-María Negro
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology     Volume:  91     ISSN:  1081-1206     ISO Abbreviation:  Ann. Allergy Asthma Immunol.     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-07-24     Completed Date:  2003-08-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9503580     Medline TA:  Ann Allergy Asthma Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  92-5     Citation Subset:  IM    
University General Hospital, Murcia, Spain.
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MeSH Terms
Allergens / immunology
Asthma / immunology*
Cynara scolymus / immunology*
Hypersensitivity, Immediate / immunology
Immunoglobulin E / blood
Middle Aged
Occupational Diseases / immunology*
Occupational Exposure / adverse effects
Peak Expiratory Flow Rate / immunology
Rhinitis / immunology*
Skin Tests
Reg. No./Substance:
0/Allergens; 37341-29-0/Immunoglobulin E

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